The difference is the father signed his document in February and murderer signed separate document in ?April (sorry on iphone, details on ipad & not close).
I am clueless about this works. The question I have is if there is any relevance in the process or is it the way things ate done.
I’m not a Deed expert, but in my experience, Quit Claim Deeds are usually a cheap and simple way to extinguish a partial interest in property or something like a life estate. Perhaps the Sister and Brother-in-Law were already part owners of the property. The father signing in February obviously shows that whatever their purpose, it was in the planning at least that long ago. Perhaps when the property was acquired, daddy had given part interests to the son and daughter and kept part for himself; Omar wanted cash prior to going jihadi and sis/b-i-l bought out the others’ interests (with $$ from ?? or by assuming the others’ obligations to the mosque). Sure makes it look like they all knew something was in the works, but doesn’t prove what. They’ll need Hillary’s attorney to help them coordinate their stories.